11011100011211 has 2 divisors, whose sum is σ = 11011100011212. Its totient is φ = 11011100011210.

The previous prime is 11011100011201. The next prime is 11011100011213. The reversal of 11011100011211 is 11211000111011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11011100011211 - 2⁶ = 11011100011147 is a prime.

It is a Sophie Germain prime.

Together with 11011100011213, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11011100011192 and 11011100011201.

It is not a weakly prime, because it can be changed into another prime (11011100011213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505550005605 + 5505550005606.

It is an arithmetic number, because the mean of its divisors is an integer number (5505550005606).

Almost surely, 2^{11011100011211} is an apocalyptic number.

11011100011211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011100011211 is an equidigital number, since it uses as much as digits as its factorization.

11011100011211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 11011100011211 its reverse (11211000111011), we get a palindrome (22222100122222).

The spelling of 11011100011211 in words is "eleven trillion, eleven billion, one hundred million, eleven thousand, two hundred eleven".